Teen slaying suspect arraigned in court

Daniel Tepfer

Updated 12:54 am, Saturday, May 3, 2014

This undated image of Maren Sanchez provided by her family is from Maren Sanchez's Facebook page. A 16-year-old teenager is accused of fatally stabbing 16-year-old Maren Sanchez Friday, April 25, 2014 in the hallway of Jonathan Law High School in Milford.
Photo: Associated Press

This undated image of Maren Sanchez provided by her family is from...

Maren Sanchez.
Photo: Courtesy Of Cody White Funeral Home

Maren Sanchez.

Christopher Plaskon from the Jonathan Law High School 2013 yearbook.
Photo: Contributed Photo, Contributed Photo

Christopher Plaskon from the Jonathan Law High School 2013 yearbook.

A man reflects during a candlelight vigil attended by hundreds at Jonathan Law High School after the death of Maren Sanchez, 16, who was stabbed to death Friday morning inside the school on April 28, 2014 in Milford, Connecticut. Sanchez, a popular student, was stabbed by a male student just hours before she was to attend her junior prom with her boyfriend.
Photo: Spencer Platt, Getty Images

A man reflects during a candlelight vigil attended by hundreds at...

Hundreds of people attend a candlelight vigil at Jonathan Law High School after the death of Maren Sanchez, 16, who was stabbed to death Friday morning inside the school on April 28, 2014 in Milford, Connecticut. Sanchez, a popular student, was stabbed by a male student just hours before she was to attend her junior prom with her boyfriend.
Photo: Spencer Platt, Getty Images

Hundreds of people attend a candlelight vigil at Jonathan Law High...

Hundreds of people attend a candlelight vigil at Jonathan Law High School after the death of Maren Sanchez, 16, who was stabbed to death Friday morning inside the school on April 28, 2014 in Milford, Connecticut. Sanchez, a popular student, was stabbed by a male student just hours before she was to attend her junior prom with her boyfriend.
Photo: Spencer Platt, Getty Images

Hundreds of people attend a candlelight vigil at Jonathan Law High...

People reflect during a candlelight vigil attended by hundreds at Jonathan Law High School after the death of Maren Sanchez, 16, who was stabbed to death Friday morning inside the school on April 28, 2014 in Milford, Connecticut. Sanchez, a popular student, was stabbed by a male student just hours before she was to attend her junior prom with her boyfriend.
Photo: Spencer Platt, Getty Images

People reflect during a candlelight vigil attended by hundreds at...

Students hug during a candlelight vigil attended by hundreds at Jonathan Law High School after the death of Maren Sanchez, 16, who was stabbed to death Friday morning inside the school on April 28, 2014 in Milford, Connecticut. Sanchez, a popular student, was stabbed by a male student just hours before she was to attend her junior prom with her boyfriend.
Photo: Spencer Platt, Getty Images

Students hug during a candlelight vigil attended by hundreds at...

Hundreds of people attend a candlelight vigil at Jonathan Law High School after the death of Maren Sanchez, 16, who was stabbed to death Friday morning inside the school on April 28, 2014 in Milford, Connecticut. Sanchez, a popular student, was stabbed by a male student just hours before she was to attend her junior prom with her boyfriend.
Photo: Spencer Platt, Getty Images

Hundreds of people attend a candlelight vigil at Jonathan Law High...

Hundreds of people attend a candlelight vigil at Jonathan Law High School after the death of Maren Sanchez, 16, who was stabbed to death Friday morning inside the school on April 28, 2014 in Milford, Connecticut. Sanchez, a popular student, was stabbed by a male student just hours before she was to attend her junior prom with her boyfriend.
Photo: Spencer Platt, Getty Images

Hundreds of people attend a candlelight vigil at Jonathan Law High...

People reflect during a candlelight vigil attended by hundreds at Jonathan Law High School after the death of Maren Sanchez, 16, who was stabbed to death Friday morning inside the school on April 28, 2014 in Milford, Connecticut. Sanchez, a popular student, was stabbed by a male student just hours before she was to attend her junior prom with her boyfriend.
Photo: Spencer Platt, Getty Images

People reflect during a candlelight vigil attended by hundreds at...

Hundreds of people attend a candlelight vigil at Jonathan Law High School after the death of Maren Sanchez, 16, who was stabbed to death Friday morning inside the school on April 28, 2014 in Milford, Connecticut. Sanchez, a popular student, was stabbed by a male student just hours before she was to attend her junior prom with her boyfriend.
Photo: Spencer Platt, Getty Images

Hundreds of people attend a candlelight vigil at Jonathan Law High...

Hundreds of people attend a candlelight vigil at Jonathan Law High School after the death of Maren Sanchez, 16, who was stabbed to death Friday morning inside the school on April 28, 2014 in Milford, Connecticut. Sanchez, a popular student, was stabbed by a male student just hours before she was to attend her junior prom with her boyfriend.
Photo: Spencer Platt, Getty Images

Hundreds of people attend a candlelight vigil at Jonathan Law High...

Hundreds of people attend a candlelight vigil at Jonathan Law High School after the death of Maren Sanchez, 16, who was stabbed to death Friday morning inside the school on April 28, 2014 in Milford, Connecticut. Sanchez, a popular student, was stabbed by a male student just hours before she was to attend her junior prom with her boyfriend.
Photo: Spencer Platt, Getty Images

Hundreds of people attend a candlelight vigil at Jonathan Law High...

A flag is flown at half mast during a candlelight vigil attended by hundreds at Jonathan Law High School after the death of Maren Sanchez, 16, who was stabbed to death Friday morning inside the school on April 28, 2014 in Milford, Connecticut. Sanchez, a popular student, was stabbed by a male student just hours before she was to attend her junior prom with her boyfriend.
Photo: Spencer Platt, Getty Images

A flag is flown at half mast during a candlelight vigil attended by...

MILFORD, CT - APRIL 28: People reflect during a candlelight vigil attended by hundreds at Jonathan Law High School after the death of Maren Sanchez, 16, who was stabbed to death Friday morning inside the school on April 28, 2014 in Milford, Connecticut. Sanchez, a popular student, was stabbed by a male student just hours before she was to attend her junior prom with her boyfriend.
Photo: Spencer Platt, Getty Images

MILFORD, CT - APRIL 28: People reflect during a candlelight vigil...

MILFORD, CT - APRIL 28: People pause and reflect during a candlelight vigil attended by hundreds at Jonathan Law High School after the death of Maren Sanchez, 16, who was stabbed to death Friday morning inside the school on April 28, 2014 in Milford, Connecticut. Sanchez, a popular student, was stabbed by a male student just hours before she was to attend her junior prom with her boyfriend.
Photo: Spencer Platt, Getty Images

MILFORD, CT - APRIL 28: People pause and reflect during a...

Balloons are released during a candlelight vigil attended by hundreds at Jonathan Law High School after the death of Maren Sanchez, 16, who was stabbed to death Friday morning inside the school on April 28, 2014 in Milford, Connecticut. Sanchez, a popular student, was stabbed by a male student just hours before she was to attend her junior prom with her boyfriend.
Photo: Spencer Platt, Getty Images

Balloons are released during a candlelight vigil attended by...

People reflect during a candlelight vigil attended by hundreds at Jonathan Law High School after the death of Maren Sanchez, 16, who was stabbed to death Friday morning inside the school on April 28, 2014 in Milford, Connecticut. Sanchez, a popular student, was stabbed by a male student just hours before she was to attend her junior prom with her boyfriend.
Photo: Spencer Platt, Getty Images

People reflect during a candlelight vigil attended by hundreds at...

Hundreds of people attend a candlelight vigil at Jonathan Law High School after the death of Maren Sanchez, 16, who was stabbed to death Friday morning inside the school on April 28, 2014 in Milford, Connecticut. Sanchez, a popular student, was stabbed by a male student just hours before she was to attend her junior prom with her boyfriend.
Photo: Spencer Platt, Getty Images

Hundreds of people attend a candlelight vigil at Jonathan Law High...

A man reflects during a candlelight vigil attended by hundreds at Jonathan Law High School after the death of Maren Sanchez, 16, who was stabbed to death Friday morning inside the school on April 28, 2014 in Milford, Connecticut. Sanchez, a popular student, was stabbed by a male student just hours before she was to attend her junior prom with her boyfriend.
Photo: Spencer Platt, Getty Images

A man reflects during a candlelight vigil attended by hundreds at...

A man reflects during a candlelight vigil attended by hundreds at Jonathan Law High School after the death of Maren Sanchez, 16, who was stabbed to death Friday morning inside the school on April 28, 2014 in Milford, Connecticut. Sanchez, a popular student, was stabbed by a male student just hours before she was to attend her junior prom with her boyfriend.
Photo: Spencer Platt, Getty Images

A man reflects during a candlelight vigil attended by hundreds at...

Molly Wasson, 17, kneels on the ground while fellow students gather around her at the site of a makeshift memorial dedicated to Maren Sanchez, a 16-year-old girl fatally stabbed at Jonathan Law High School, in Milford, Conn., April 26, 2014. The young man who authorities say attacked Sanchez will probably be charged as an adult, his lawyer said, and investigators appeared no closer to determining a motive.
Photo: Wendy Carlson, New York Times

Molly Wasson, 17, kneels on the ground while fellow students gather...

Molly Wasson, 17, kneels on the ground while fellow students gather around her at the site of a makeshift memorial dedicated to Maren Sanchez, a 16-year-old girl fatally stabbed at Jonathan Law High School, in Milford, Conn., April 26, 2014. The young man who authorities say attacked Sanchez will probably be charged as an adult, his lawyer said, and investigators appeared no closer to determining a motive.
Photo: Wendy Carlson, New York Times

Molly Wasson, 17, kneels on the ground while fellow students gather...

Family and friends of Maren Sanchez, a 16-year-old girl fatally stabbed by another student in the hallway of Jonathan Law High School, gathered for a vigil just hours before the junior prom in Milford, Conn., April 25, 2014. Sanchez was attacked by a 16-year-old male classmate, and the Milford Police Department is investigating reports of a dispute over the prom.
Photo: Wendy Carlson, New York Times

Family and friends of Maren Sanchez, a 16-year-old girl fatally...

People raise candles as they listen to Maren Sanchez sing during a vigil for her at Jonathan Law High School, Monday, April 28, 2014, in Milford, Conn. Sanchez was fatally stabbed inside the school on Friday hours before her junior prom. (AP Photo/Jessica Hill)
Photo: Jessica Hill, Associated Press

People raise candles as they listen to Maren Sanchez sing during a...

Friends and family including many students from Jonathan Law High School arrive at a memorial service at the First United Church of Christ in Milford Conn. for Maren Sanchez who was killed at the school Friday April 25, 2014. The 16-year-old girl was stabbed to death inside a Connecticut high school Friday, and police were investigating whether a boy attacked her after she turned down an invitation to be his prom date. (AP Photo/The New Haven Register, Peter Casolino)
Photo: Peter Casolino, Associated Press

Friends and family including many students from Jonathan Law High...

A banner reading RIP Maren is displayed on the press box on the football field during a vigil for Maren Sanchez at Jonathan Law High School, Monday, April 28, 2014, in Milford, Conn. Sanchez was fatally stabbed inside the school on Friday hours before her junior prom. (AP Photo/Jessica Hill)
Photo: Jessica Hill, Associated Press

A banner reading RIP Maren is displayed on the press box on the...

Students spray paint a rock purple outside Jonathan Law High School in Milford, Conn., Friday, April 25, 2014, in memory of 16-year-old stabbing victim Maren Sanchez. Sanchez was stabbed to death earlier in the day during an altercation inside the school. A teenage boy is in custody, and police are investigating whether she was stabbed because she declined to be his date at the junior prom. (AP Photo/The New Haven Register, Peter Hvizdak) MANDATORY CREDIT
Photo: Peter Hvizdak, Associated Press

Students spray paint a rock purple outside Jonathan Law High School...

People attend a during a vigil for Maren Sanchez at Jonathan Law High School, Monday, April 28, 2014, in Milford, Conn. Sanchez was fatally stabbed inside the school on Friday hours before her junior prom. (AP Photo/Jessica Hill)
Photo: Jessica Hill, Associated Press

People attend a during a vigil for Maren Sanchez at Jonathan Law...

People attend a during a vigil for Maren Sanchez at Jonathan Law High School, Monday, April 28, 2014, in Milford, Conn. Sanchez was fatally stabbed inside the school on Friday hours before her junior prom. (AP Photo/Jessica Hill)
Photo: Jessica Hill, Associated Press

People attend a during a vigil for Maren Sanchez at Jonathan Law...

People hold candles during a vigil for Maren Sanchez at Jonathan Law High School, Monday, April 28, 2014, in Milford, Conn. Sanchez was fatally stabbed inside the school on Friday hours before her junior prom. (AP Photo/Jessica Hill)
Photo: Jessica Hill, Associated Press

People hold candles during a vigil for Maren Sanchez at Jonathan...

People hold candles during a vigil for Maren Sanchez at Jonathan Law High School, Monday, April 28, 2014, in Milford, Conn. Sanchez was fatally stabbed inside the school on Friday hours before her junior prom. (AP Photo/Jessica Hill)
Photo: Jessica Hill, Associated Press

People hold candles during a vigil for Maren Sanchez at Jonathan...

A woman holds a candle while holding a program for a vigil for Maren Sanchez at Jonathan Law High School, Monday, April 28, 2014, in Milford, Conn. Sanchez was fatally stabbed inside the school on Friday hours before her junior prom. (AP Photo/Jessica Hill)
Photo: Jessica Hill, Associated Press

A woman holds a candle while holding a program for a vigil for...

A woman holds a candle while holding a program for a vigil for Maren Sanchez at Jonathan Law High School, Monday, April 28, 2014, in Milford, Conn. Sanchez was fatally stabbed inside the school on Friday hours before her junior prom. (AP Photo/Jessica Hill)
Photo: Jessica Hill, Associated Press

A woman holds a candle while holding a program for a vigil for...

A woman carries balloons during a vigil for Maren Sanchez at Jonathan Law High School, Monday, April 28, 2014, in Milford, Conn. Sanchez was fatally stabbed inside the school on Friday hours before her junior prom. (AP Photo/Jessica Hill)
Photo: Jessica Hill, Associated Press

A woman carries balloons during a vigil for Maren Sanchez at...

Friends of Maren Sanchez, including boyfriend Jarrod Butts speak at a vigil for her at Jonathan Law High School, Monday, April 28, 2014, in Milford, Conn. Sanchez was fatally stabbed inside the school on Friday hours before her junior prom. (AP Photo/Jessica Hill)
Photo: Jessica Hill, Associated Press

Friends of Maren Sanchez, including boyfriend Jarrod Butts speak at a vigil for her at Jonathan Law High School, Monday, April 28, 2014, in Milford, Conn. Sanchez was fatally stabbed inside the school on Friday hours before her junior prom. (AP Photo/Jessica Hill)
Photo: Jessica Hill, Associated Press

Students hug and spray paint a rock purple outside Jonathan Law High School in Milford, Conn., Friday, April 25, 2014, in memory of 16-year-old stabbing victim Maren Sanchez. Sanchez was stabbed to death earlier in the day during an altercation inside the school. A teenage boy is in custody, and police are investigating whether she was stabbed because she declined to be his date at the junior prom. (AP Photo/The New Haven Register, Peter Hvizdak) MANDATORY CREDIT
Photo: Peter Hvizdak, Associated Press

Students hug and spray paint a rock purple outside Jonathan Law...

Friends of Maren Sanchez, including boyfriend Jarrod Butts embrace during a vigil for her at Jonathan Law High School, Monday, April 28, 2014, in Milford, Conn. Sanchez was fatally stabbed inside the school on Friday hours before her junior prom. (AP Photo/Jessica Hill)
Photo: Jessica Hill, Associated Press

Friends of Maren Sanchez, including boyfriend Jarrod Butts embrace...

People attend during a vigil for Maren Sanchez at Jonathan Law High School, Monday, April 28, 2014, in Milford, Conn. Sanchez was fatally stabbed inside the school on Friday hours before her junior prom. (AP Photo/Jessica Hill)
Photo: Jessica Hill, Associated Press

People attend during a vigil for Maren Sanchez at Jonathan Law High...

People attend during a vigil for Maren Sanchez at Jonathan Law High School, Monday, April 28, 2014, in Milford, Conn. Sanchez was fatally stabbed inside the school on Friday hours before her junior prom. (AP Photo/Jessica Hill)
Photo: Jessica Hill, Associated Press

People attend during a vigil for Maren Sanchez at Jonathan Law High...

Elizabeth Voytershark, 19, pays her respects at an impomptu memorial for stabbing victim Maren Sanchez, in front of Jonathan Law High School in Milford, Conn. on Thursday April 25, 2014.
Photo: Christian Abraham

Elizabeth Voytershark, 19, pays her respects at an impomptu...

Seniors from Jonathan Law High School arrive at Walnut Beach in their prom suits and dresses to hold a memorial for their friend Maren Sanchez in Milford, Conn. on Friday April 25, 2014. Sanchez was stabbed to death earlier on Friday, which was to be the day of the school's prom.
Photo: Christian Abraham

Seniors from Jonathan Law High School arrive at Walnut Beach in...

Seniors from Jonathan Law High School release purple balloons while at Walnut Beach, during a memorial for their friend Maren Sanchez in Milford, Conn. on Friday April 25, 2014. Sanchez was stabbed to death earlier on Friday, which was to be the day of the school's prom. All the seniors came to the memorial wearing their prom suits and dresses.
Photo: Christian Abraham

Seniors from Jonathan Law High School release purple balloons while...

Colleen McMurray, 16, pays her respects at an impomptu memorial for stabbing victim Maren Sanchez, in front of Jonathan Law High School in Milford, Conn. on Thursday April 25, 2014.
Photo: Christian Abraham

Students from Jonathan Law High School pose for photos at the end of a pier while holding the prom dress of their friend Maren Sanchez after a memorial for her at Walnut Beach in Milford, Conn. on Friday April 25, 2014. Sanchez was stabbed to death at the school on Friday morning. Students showed up at Walnut Beach wearing their prom dresses and suits because Friday night was to be prom night.
Photo: Christian Abraham

Students from Jonathan Law High School pose for photos at the end...

A student from Jonathan Law High School brings purple balloons onto Walnut Beach, during a memorial for their friend Maren Sanchez in Milford, Conn. on Friday April 25, 2014. Sanchez was stabbed to death earlier on Friday, which was to be the day of the school's prom. All the students came to the memorial wearing their prom suits and dresses.
Photo: Christian Abraham

A student from Jonathan Law High School brings purple balloons onto...

Students from Jonathan Law High School attend a memorial for stabbing victim Maren Sanchez at Walnut Beach in Milford, Conn. on Friday April 25, 2014. Sanchez was stabbed to death at the school on Friday morning. Students showed up at Walnut Beach wearing their prom dresses and suits because Friday night was to be prom night.
Photo: Christian Abraham

Students from Jonathan Law High School attend a memorial for...

Students from Jonathan Law High School walk together along the beach to a pier nearby after a memorial was held for their friend Maren Sanchez in Milford, Conn. on Friday April 25, 2014. Sanchez was stabbed to death earlier on Friday, which was to be the day of the school's prom. All the students came to the memorial wearing their prom suits and dresses.
Photo: Christian Abraham

Students from Jonathan Law High School walk together along the...

Students from Jonathan Law High School walk together along the beach to a pier nearby after a memorial was held for their friend Maren Sanchez in Milford, Conn. on Friday April 25, 2014. Sanchez was stabbed to death earlier on Friday, which was to be the day of the school's prom. All the students came to the memorial wearing their prom suits and dresses.
Photo: Christian Abraham

Students from Jonathan Law High School walk together along the...

Jonathan Law High School, in Milford, Conn. April 25, 2014, where Maren Sanchez was stabbed to death by a fellow student.
Photo: Ned Gerard

Jonathan Law High School, in Milford, Conn. April 25, 2014, where...

Jonathan Law High School, in Milford, Conn. April 25, 2014, where Maren Sanchez was stabbed to death by a fellow student.
Photo: Ned Gerard

Jonathan Law High School, in Milford, Conn. April 25, 2014, where...

Jonathan Law High School, in Milford, Conn. April 25, 2014, where Maren Sanchez was stabbed to death by a fellow student.
Photo: Ned Gerard

Jonathan Law High School, in Milford, Conn. April 25, 2014, where...

For a second day, students gather around the memorial made for stabbing victim Maren Sanchez, in front of Jonathan Law High School in Milford, Conn. on Saturday April 26, 2014. Sanchez was stabbed to death on Friday morning, which was to be the day of the school's junior prom.
Photo: Christian Abraham

For a second day, students gather around the memorial made for...

For a second day, students gather around the memorial made for stabbing victim Maren Sanchez, in front of Jonathan Law High School in Milford, Conn. on Saturday April 26, 2014. Sanchez was stabbed to death on Friday morning, which was to be the day of the school's junior prom.
Photo: Christian Abraham

For a second day, students gather around the memorial made for...

A student leaves flowers at the memorial made for stabbing victim Maren Sanchez, in front of Jonathan Law High School in Milford, Conn. on Saturday April 26, 2014. Sanchez was stabbed to death on Friday morning, which was to be the day of the school's junior prom. Today, students and anyone from the community were able to gather in the school's gym for food provided by local businesses.
Photo: Christian Abraham

A student leaves flowers at the memorial made for stabbing victim...

For a second day, students and area residents came to gather around the memorial made for stabbing victim Maren Sanchez, in front of Jonathan Law High School in Milford, Conn. on Saturday April 26, 2014. Sanchez was stabbed to death on Friday morning, which was to be the day of the school's junior prom. Today, students and anyone from the community were able to gather in the school's gym for food provided by local businesses.
Photo: Christian Abraham

For a second day, students and area residents came to gather around...

A student leaves flowers and a stuffed animal as she and others gather around the memorial made for stabbing victim Maren Sanchez, in front of Jonathan Law High School in Milford, Conn. on Saturday April 26, 2014. Sanchez was stabbed to death on Friday morning, which was to be the day of the school's junior prom.Today, students and anyone from the community were able to gather in the school's gym for food provided by local businesses.
Photo: Christian Abraham

A student leaves flowers and a stuffed animal as she and others...

For a second day, students gather around the memorial made for stabbing victim Maren Sanchez, in front of Jonathan Law High School in Milford, Conn. on Saturday April 26, 2014. Sanchez was stabbed to death on Friday morning, which was to be the day of the school's junior prom.Today, students and anyone from the community were able to gather in the school's gym for food provided by local businesses.
Photo: Christian Abraham

For a second day, students gather around the memorial made for...

Student Jordan Shackett, 16, and her friend Morgan Gallagher, 16, lighting candle, stop by the memorial made for stabbing victim Maren Sanchez, in front of Jonathan Law High School in Milford, Conn. on Saturday April 26, 2014. Sanchez was stabbed to death on Friday morning, which was to be the day of the school's junior prom.Today, students and anyone from the community were able to gather in the school's gym for food provided by local businesses.
Photo: Christian Abraham

Student Jordan Shackett, 16, and her friend Morgan Gallagher, 16,...

Jonathan Law High School baseball player Kurt Holden holds a sign in memory of classmate Maren Sanchez as he walked with his teammates in her honor at the annual In Your Shoes event at Lisman Landing in downtown Milford, Conn. on Sunday, April 27, 2014.
Photo: Brian A. Pounds

Jonathan Law High School baseball player Kurt Holden holds a sign...

Jonathan Law High School baseball player Kurt Holden holds a sign in memory of classmate Maren Sanchez as he walks with his teammates in her honor at the annual In Your Shoes event on Broad Street in downtown Milford, Conn. on Sunday, April 27, 2014.
Photo: Brian A. Pounds

Jonathan Law High School baseball player Kurt Holden holds a sign...

A mourner attends the vigil in honor of slain student Maren Sanchez at Jonathan Law High School in Milford, Conn. on Monday, April 28, 2014.
Photo: Brian A. Pounds

A mourner attends the vigil in honor of slain student Maren Sanchez...

Mourners fill the football field for the vigil in honor of slain student Maren Sanchez at Jonathan Law High School in Milford, Conn. on Monday, April 28, 2014.
Photo: Brian A. Pounds

Mourners fill the football field for the vigil in honor of slain...

Students arrive at the vigil in honor of slain student Maren Sanchez at Jonathan Law High School in Milford, Conn. on Monday, April 28, 2014.
Photo: Brian A. Pounds

Students arrive at the vigil in honor of slain student Maren...

Mourners attend the vigil in honor of slain student Maren Sanchez at Jonathan Law High School in Milford, Conn. on Monday, April 28, 2014.
Photo: Brian A. Pounds

Mourners attend the vigil in honor of slain student Maren Sanchez...

Mourners attend the vigil in honor of slain student Maren Sanchez at Jonathan Law High School in Milford, Conn. on Monday, April 28, 2014.
Photo: Brian A. Pounds

Mourners attend the vigil in honor of slain student Maren Sanchez...

Mourners attend the vigil in honor of slain student Maren Sanchez at Jonathan Law High School in Milford, Conn. on Monday, April 28, 2014.
Photo: Brian A. Pounds

Mourners attend the vigil in honor of slain student Maren Sanchez...

Mourners attend the vigil in honor of slain student Maren Sanchez at Jonathan Law High School in Milford, Conn. on Monday, April 28, 2014.
Photo: Brian A. Pounds

Mourners attend the vigil in honor of slain student Maren Sanchez...

Mourners attend the vigil in honor of slain student Maren Sanchez at Jonathan Law High School in Milford, Conn. on Monday, April 28, 2014.
Photo: Brian A. Pounds

Mourners attend the vigil in honor of slain student Maren Sanchez...

Christopher Plaskon, 16, second from right, stands with defense attorneys Edward Gavin, left, and Richard T Meehan, Jr., far right, and appointed guardian and uncle Paul Healy, second from left, during his public court appearance at Superior Court Friday, May 2, 2014, in Milford, Conn. He is charged in the fatal stabbing of Maren Sanchez, 16, who was stabbed to death April 25 inside a hallway at Jonathan Law High School in Milford.
Photo: Peter Hvizdak, Peter Hvizdak, Pool

Christopher Plaskon, 16, second from right, stands with defense...

Christopher Plaskon, 16, second from right, stands with defense attorneys Edward Gavin, left, and Richard T Meehan, Jr., far right, and appointed guardian and uncle Paul Healy, second from left, during his public court appearance at Superior Court Friday, May 2, 2014, in Milford, Conn. He is charged in the fatal stabbing of Maren Sanchez, 16, who was stabbed to death April 25 inside a hallway at Jonathan Law High School in Milford.
Photo: Peter Hvizdak, Peter Hvizdak, Pool

Christopher Plaskon, 16, second from right, stands with defense...

Christopher Plaskon, 16, right, stands with appointed guardian, uncle Paul Healy, during a hearing in his public court appearance at Superior Court Friday, May 2, 2014, in Milford, Conn. He his charged with the murder of Maren Sanchez, 16, who was stabbed to death last Friday inside a hallway at Jonathan Law High School in Milford.
Photo: Peter Hvizdak, Peter Hvizdak, Pool

Christopher Plaskon, 16, right, stands with appointed guardian,...

Christopher Plaskon, 16, second from right, stands with defense attorneys Edward Gavin, left, and Richard T Meehan, Jr., far right, and appointed guardian and uncle Paul Healy, second from left, during his public court appearance at Superior Court Friday, May 2, 2014, in Milford, Conn. He is charged in the fatal stabbing of Maren Sanchez, 16, who was stabbed to death April 25 inside a hallway at Jonathan Law High School in Milford.
Photo: Peter Hvizdak, Peter Hvizdak, Pool

MILFORD -- As he stood with his lawyers in the courtroom Friday morning, Christopher Plaskon had an odd look on his face, not a smile, not a blank stare, but a look eerily similar to his yearbook photo.

"He is suffering from an active psychosis," his lawyer, Richard Meehan, said later. "I do believe he is sick."

But State's Attorney Kevin Lawlor said Meehan's opinion will not likely have an effect on his prosecution of the 16-year-old Plaskon in the fatal slashing of his Jonathan Law High School classmate, Maren Sanchez.

"They are going to proceed with their theories, and we will continue our investigation of the case," the prosecutor said.

Plaskon stood in the crowded courtroom in handcuffs and shackles. He wore a blue hooded sweatshirt, blue sweatpants and white socks with no shoes. He was flanked by Meehan and judicial marshals.

Plaskon, who is being charged as an adult, remained quiet and unemotional during the brief hearing.

No family members except his uncle, Paul Healy, were present. Healy, the director of safety at Sacred Heart University and a former Milford police officer, was appointed Plaskon's guardian. Healy and the Plaskon family are reportedly very close and live next door to each other. Healy's wife, who is now deceased, used to baby-sit Plaskon.

"His parents wanted to come, and it was our recommendation that they not come and we let the uncle stand in today," Meehan said. "They are a very large family and all their hearts are broken."

The baby-faced teen is the third of five brothers.

He faces up to 60 years in prison if found guilty, with a mandatory minimum of 25 years.

His arraignment came a day after Sanchez's wake that attracted nearly 1,000 mourners.

"Christopher is in the right place and will be in the institute's medical facility," he said.

The judge ordered that Plaskon be under a suicide watch, and the lawyers said Plaskon's care at the facility will be overseen by a psychologist.

"We are satisfied in our discussion with Chris that he understands he is charged with murder, but whether he understands the full ramifications of that remains to be seen," Meehan added.

If convicted of murder, Plaskon could be sentenced to up to 60 years in prison as an adult.

The Sanchez family did not attend Friday's hearing and Meehan did not say whether family members would attend future hearings.

"This is as difficult a day that a family could endure," he said.

Police said the 16-year-old Sanchez, an athlete and National Honor Society member, was confronted by childhood friend Plaskon, in a first-floor hallway at the school around 7 a.m., before classes began last Friday. Police said Sanchez was slashed across the throat, face and chest. A teacher saw Plaskon on top of Sanchez during the attack and unsuccessfully tried to pull him off her, according to a police report. Another witness pointed officers to the bloody knife where it had been dropped a short distance down the hallway, authorities said.

A report issued by Milford police Tuesday said after Plaskon slashed Sanchez, he dropped the knife and calmly walked to the principal's office at Jonathan Law High School.

"I did it. Just arrest me," he told Officer James Kiely, the school's resource officer, according to reports.

Kiely had been called to the principal's office, where he found Plaskon with bloody hands and clothing. The report states that Kiely, who knows Plaskon, asked him what happened and the boy confessed. Kiely handcuffed Plaskon, then went to the scene in the hallway where he found Sanchez in grave condition.

Neither the lawyers nor the prosecutor would confirm reports from other students that Plaskon slashed Sanchez because she refused to go to the junior prom with him. Nor would they confirm reports that Plaskon has a history of depression and cutting himself.

Meehan said several times after the hearing that his client suffers from a psychiatric illness.

Plaskon will meet with psychologists and psychiatrists as the case proceeds, he said.